Analysis of information sources in references of the Wikipedia article "HEPA" in Turkish language version.
|ad1=
eksik |soyadı1=
(yardım)Gantz, Carroll (2012-09-21). The Vacuum Cleaner: A History. McFarland. p. 128. ISBN 9780786493210. Archived from the original on 2021-05-16. Retrieved 2020-11-11.|ad1=
eksik |soyadı1=
(yardım)Gantz, Carroll (2012-09-21). The Vacuum Cleaner: A History. McFarland. p. 128. ISBN 9780786493210. Archived from the original on 2021-05-16. Retrieved 2020-11-11.